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  • Title: [Acute renal failure with lactic acidosis].
    Author: Ando M, Shimizu K.
    Journal: Nihon Jinzo Gakkai Shi; 1990 Jun; 32(6):729-37. PubMed ID: 2214321.
    Abstract:
    This study examined the acid base disturbances in 18 adults with acute renal failure (ARF) from one of new aspects, which is lactate metabolism and pathophysiology. 10 patients (55%) of them were accompanied by lactic acidosis and 9 patients (90%) of those with lactic acidosis also had severe hepatic failure. Mortality of patients with lactic acidosis was 80%, and much higher than that of ARF (66.7%). Lactate, pyruvate, lactate-to-pyruvate ratio (L/P) were 76.7 +/- 15.66 mg/dl, 3.30 +/- 0.74 mg/dl and 19.9 +/- 1.41, respectively. All of them significantly raised, compared to values of healthy adults, patients with liver cirrhosis, chronic renal failure and diabetes mellitus. Arterial pH and HCO3- levels were 7.20 +/- 0.04 and 10.6 +/- 1.20 mEq/l. Anion gap (AG) was 30.0 +/- 3.66 mEq/l. Significant correlations of lactate with pH, HCO3-, AG and L/P were demonstrated, while correlations of lactate with BUN, CR and prothrombin time were not significantly observed. Lactic acidosis results from two mechanisms. One is lactate overproduction (e.g tissue hypoxia) and the other is lactate underutilization (e.g severe liver and/or renal failure). Whenever lactic acidosis occurred, both mechanisms were present simultaneously and continuously. Especially, the latter mechanism had a very important role on it, and seemed to decide the prognosis of the patients with lactic acidosis. Therapy of lactic acidosis was very difficult. First of all, we tried to improve the circulatory failure and severe acidemia (pH less than 7.20) not to fall into vicious cycle. Then, CAVH, if combined with alkali infusion, seemed to be the most useful technique in managing lactic acidosis with ARF.
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